 AnTech
 - Designs and manufactures equipment for the oil and gas industries, including coiled tubing tools, completion and production equipment, and software.- Coretest Systems, Inc.
- Manufacturer of core analysis and geological laboratory test equipment.
- Environmental Mechanics AB
- Manufacturer of Geotechnical/Geological instruments for investigative drilling.
- Falcon GDP Inc.
- Geological drilling products for exploration, construction, and abandonments.
- Micro-SMART Systems, Inc
- Design and manufacture downhole memory and e-line instrumentation for the oilfield. Gauges include pressure, temperature, flow, and gamma.
- Nutter Engineering
- Provides mass transfer equipment and services for the refining, chemical, petrochemical, and gas processing industries.
- Relucent Exploration Technologies, Inc.
- Assists in selection of drilling sites.
- Resources Management Indonesia
- Providing equipment and management for engineering and construction projects.
- Spitzer Industries
- Custom packager of equipment and systems, specialising in engineered process and production skid packages, ASME pressure vessels, and other custom weldments.
- Stolt Offshore Concrete Products
- Manufacturer of custom concrete barges for use in shallow water environments.
- VTV, Incorporated
- Markets the "Diagnostic 3D Seismic Process," a computerized tool for imaging oil and gas reservoirs.
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